In an AP view, the X-ray beam enters the body from which direction?

In an AP view, the X-ray beam enters the body from which direction?

• A. Posterior and exits anterior
• B. Anterior and exits posterior
• C. Lateral to medial
• D. Superior to inferior

Answer: (B)

Anteroposterior means the X-ray beam travels from the front of the body to the back. So in an AP view, the beam enters the body at the anterior surface and exits at the posterior surface. This is why the beam path is described as front-to-back. (In contrast, a PA projection would be back-to-front.)

Anteroposterior means the X-ray beam travels from the front of the body to the back. So in an AP view, the beam enters the body at the anterior surface and exits at the posterior surface. This is why the beam path is described as front-to-back. (In contrast, a PA projection would be back-to-front.)